176,585 research outputs found
Do Couto - Supplemental Material AJP
No full textSupplemental Material:Impairment of Microvascular Endothelial Kir2.1 Channels Contributes to Endothelial Dysfunction in Human HypertensionDo Couto N, Fancher I, Hwang C-L, Phillips SA, Levitan I</p
À sombra do tamarindo: identidade, tradução cultural e gênero em O último voo do flamingo, de Mia Couto
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Literatura, Florianópolis, 2014.Pretendemos expor questões presentes no romance do moçambicano Mia Couto O último voo do flamingo, como identidade, tradução cultural e gênero. A intenção é propor discussões acerca desses temas tão pertinentes na contemporaneidade, sobretudo no que se refere aos países africanos que passaram pelo processo de colonização e apenas recentemente conquistaram a independência política. Assim, procuramos elucidar também alguns pontos fundantes da relação entre literatura e o contexto histórico em que esta foi produzida, pois essa relação suscita diversas análises. Para tanto, trazemos à baila alguns(mas) estudiosos(as) da cena literária africana de língua portuguesa e também autores(as) das teorias pós-coloniais e de gênero.Abstract : It is intended to expose issues in the novel the Mozambican Mia Couto O ultimo voo do flamingo, like identity, gender and cultural translation. The intention is to propose discussions on these topics as relevant in contemporary times, especially with regard to African countries that have gone through the process of colonization and just recently won political independence. So, I try also to elucidate some foundational points of the relationship between literature and the historical context in which it was produced, because this relationship raises several analyzes. To do so, bring to the fore some scholars of African literary scene of the Portuguese language and also classical authors of postcolonial and gender theories
Pura mistura: alteridentidades calibanescas em O outro pé da sereia, de Mia Couto
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Literatura, Florianópolis, 2013.O presente trabalho discute os conceitos de originalidade e subalternidade do colonialismo e pós-colonialismo português, conforme Boaventura de Sousa Santos, relacionado-os aos conceitos de identidade e alteridade no romance O outro pé da sereia, do moçambicano Mia Couto, e aos diferentes construtos calibânicos e inter-identitários que se apresentam nessa obra. Abstract : This paper discusses the concepts of originality and subalternity in the Portuguese colonialism and post-colonialism, according to Boaventura de Sousa Santos, in connection to the concepts of identity and otherness in the novel The Mermaid's Other Foot, by Mozambican writer Mia Couto, and the diverse calibanic and inter-identitarian discourses that arise in such work
Pensamento da America: intelectualidade e Estado Novo em um projeto comungado (1941 - 1945)
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas, Programa de Pós-Graduação em História, Florianópolis, 2013.Esta dissertação objetivou investigar a atividade editorial de Rui Ribeiro Couto e Renato Costa Almeida enquanto estes intelectuais estiveram à frente do Pensamento da America, uma publicação mensal vinculada ao A Manhã, jornal porta voz do Estado Novo. Este suplemento panamericano veio a público entre 1941 e 1949, no entanto a pesquisa aqui apresentada focalizou o período que compreendeu desde seu início até 1945, representativo marco do final da segunda Guerra Mundial e do Estado Novo. A primazia do enfoque recaiu sobre o estudo de mecanismos editoriais que permearam uma publicação oficial, bem como sobre a relação estabelecida entre os intelectuais acima apontados e o governo estadonovista. Abstract : This dissertation purpose is to study the editorial activity of Rui Ribeiro Couto and Renato Costa Almeida while these intellectuals were editors of a publication linked to the newspaper of Estado Novo (A Manhã). This publication was called Pensamento da America and was a monthly pan-American journal published between 1941 and 1949. However, this research focused on the period between 1941 and 1945, year that represents the end of the Second World War and the end of the Estado Novo. The focus was on the study of mechanisms that permeated the edition of an official publication, as well as on the relation between these intellectuals and the Estado Novo
Maria Cristina C. Ribas and Anélia M. Pietrani interview Gilberto Mendonça Teles and Helena Bonito Couto Pereira
No full textMaria Cristina Cardoso Ribas e Anélia Montechiari Pietrani entrevistam Gilberto Mendonça Teles, poeta, crítico, professor e acadêmico correspondente da Academia das Ciências de Lisboa, e Helena Bonito Couto Pereira, professora visitante na UFPA, especialista em teoria e critica literárias e fundadora da Revue Internationale d´Art et d´ArtologieMaria Cristina Cardoso Ribas and Anélia Montechiari Pietrani interview Gilberto Mendonça Teles, a Brazilian poet, critic, professor and a fellow from the Lisbon Academy of Sciences, and the visiting professor at Federal University of Pará – Brazil –, Helena Bonito Couto Pereira, a specialist in literary theory and criticismo, and founder of the Revue Internationale d’Art et d’Artologie
Stigmatodon viridibracteatus D. R. Couto, Fraga & Leme 2022, sp. nov.
No full textStigmatodon viridibracteatus D.R. Couto, Fraga & Leme, sp. nov. (Figs. 6 A–G) Diagnosis: ___ This new species differs from S. euclidianus, its closest morphological relative, by the smaller size when in bloom (55–62 cm vs. 60–80 cm tall), leaf blades smaller (19–23.5 × 3–4 cm vs. 25–33 × 5–6 cm), and by suborbicular floral bracts (vs. broadly ovate), with obtuse apex (vs. acuminate to acute), shorter and broader (24.5–29 × 36–40 mm vs. 30–35 × 25–30 mm), smooth to inconspicuously corrugate-sulcate near the apex at anthesis (vs. strongly corrugate-sulcate at anthesis), green at anthesis (vs. greenish toward the base only before anthesis, stramineous toward the apex). Type: — BRAZIL. Espírito Santo: Barra de S „o Francisco, inselberg between Vila Paulista and Santa Teresinha, epilithic on vertical rock wall, forming a large population, 250 m elevation, 18° 35’ 35” S, 40° 48’ 16” W, 17 October 2019, D. R . Couto 4829, P. M. Gonela, T. Condez & C. N. Fraga (holotype MBML!). Description:— Plants rupicolous, flowering 55–62 cm tall. Leaves 20–25 in number, rosulate, thick coriaceous, forming a funnelform rosette; sheath elliptic, 10–13 × 7–8.5 cm, densely and minutely castaneous lepidote on both sides; blade narrowly triangular, apex acuminate-caudate, recurved, canaliculate toward the base, flat toward the apex, suberect, 19–23.5 cm long, 3–4 cm wide at the base, completely covered on both sides with a dense layer of whitecinereous trichomes obscuring the color of the blades, margins truncate, 1–1.5 mm thick. Peduncle arching, 40–45 cm long, 0.6–0.7 cm in diameter, green, glabrous, smooth at anthesis, sulcate when dry; peduncle bracts the basal ones subfoliaceous, the upper ones ovate, apex acute and apiculate, 2.5–4 × 2.5–2.7 cm, erect, almost completely hiding the peduncle, distinctly exceeding the internodes, densely and coarsely white lepidote toward the apex, green near the base and cinereous toward the apex, strongly sulcate at anthesis. Inflorescence simple, suberect, 13–14 cm long, apex obtuse at anthesis, 9–18 flowered; main axis smooth at anthesis, sulcate when dry, green, glabrous, internodes 8–9 × 5–7 mm; floral bracts suborbicular, apex obtuse, 24.5–29 × 36–40 mm, distinctly shorter than the sepals, densely and inconspicuously white lepidote adaxially, sparsely and inconspicuously white lepidote to glabrous abaxially except the apex being sometimes subdensely white lepidote, ecarinate but bearing a broadly obtuse keel near the apex, slightly secund with the flowers at anthesis, coriaceous, smooth to inconspicuously corrugate-sulcate near the apex at anthesis, distinctly corrugate-sulcate when dry, green. Flowers 45–50 mm long, nocturnal, with a fruit-like fragrance and producing translucent mucilage, distichous, subdensely disposed and distinctly secund at anthesis; pedicel 6.5–8 mm long, 8–9.6 mm in diameter at the distal end, stout, green, glabrous; sepals elliptic, apex obtuse, 25–30 × 17–20 mm, green, glabrous abaxially, densely and inconspicuously lepidote adaxially, thick and coriaceous near the base, margins membranaceous; petals obovate, rounded and apex emarginate, recurved near the apex at anthesis, 34–36 × 14–20 mm, greenish-white, thicker toward the base, bearing 2 appendages at the base; appendages 9–11 × 3–4 mm, spathulate, basally adnate to the petals for 3.5–6.5 mm, apex irregularly dentate to acute; corolla campanulate, 25–30 mm in diameter; filaments free, complanate, 16.5–22.5 × 1.3–2.2 mm, white; anthers 7–8.5 mm long, dorsifixed near the base, base bilobed, apex obtuse, arranged three on each lateral side of the corolla at anthesis; stigma tubo-laciniate type I, margins denticulate, 1.5–2 mm in diameter, greenish; ovules caudate. Capsules unknown. Etymology: ___ The name of this new species is a reference to the green color of its floral bracts, which distinguishes it from other cinereous-leafed species of Stigmatodon. Additional specimen examined (paratypes): ___ BRAZIL. Espírito Santo: Barra de S „ o Francisco, inselberg between Vila Paulista and Santa Teresinha, epilithic on vertical rock wall, forming large population, 250 m elevation, 18° 35’ 35” S, 40° 48’ 16” W, 17 October 2019, D. R . Couto 4826, P. M. Gonela, T. Condez & C. N. Fraga (R!); ibidem, D. R . Couto 4831, P. M. Gonela, T. Condez & C. N. Fraga (RB!). Distribution and habitat:— Stigmatodon viridibracteatus is epilithic, found on vertical granitic slopes of inselbergs located in the county of Barra de S„o Francisco, Espírito Santo state, near the border with Minas Gerais. At the type locality, these plants grow on the north face of the cliff, where they form large and dense populations, along with sparse individuals of Encholirium horridum Smith (1940: 32) and the Cactaceae Coleocephalocereus fluminensis (Miquel) Backeberg (1941: 53). Preliminary conservation status: ___ Vulnerable [VU: D2]. Stigmatodon viridibracteatus is only known from its type locality, a lowland inselberg in the Atlantic Forest from northwest of Espírito Santo. It has an AOO of 4 km 2, an undefined EOO, and is not found in any conservation unit. Its small population is unprotected and prone to the effects of stochastic events in the near future. Thus, it seems prudent to include this new species in the Vulnerable category [VU: D2]. However, further field survey may change the conservation status of S. viridibracteatus, since there is an important sampling gap in the northwestern region of Espírito Santo, mainly comprising the locally abundant but difficult-to-access inselbergs. Observations: ___ Stigmatodon viridibracteatus is morphologically closely related to S. euclidianus (Leme & Brown, 2010: 57) Leme, G.K. Brown & Barfuss (Barfuss et al. 2016: 57), but differs from it mainly by the smaller size when in bloom (55–62 cm vs. 60–80 cm tall), inflorescence shorter (13–14 cm vs. 20–25 cm long), and by the suborbicular floral bracts (vs. broadly ovate), apex obtuse (vs. acuminate to acute), shorter and broader (24.5–29 × 36–40 mm vs. 30–35 × 25–30 mm), smooth to inconspicuously corrugate-sulcate near the apex at anthesis (vs. strongly corrugate-sulcate at anthesis), green (vs. greenish toward the base only before anthesis, lightly castaneous-stramineous toward the apex at anthesis). On the other hand, it can be also confused with S. magnibracteaus (Leme & Kollmann, 2014: 94) Leme, G.K. Brown & Barfuss (Barfuss et al. 2016: 57), but can be distinguished by its higher number of leaves (20–25 vs. ca. 18 in number), longer peduncle (40–45 cm vs. 20–32 cm), with ovate peduncle bracts and attenuate then apiculate apex (vs. ovate-lanceolate, and acuminate to caudate apex), floral bracts shorter (24.5–29 mm vs. 34–47 mm long), distinctly shorter than the sepals (vs. equaling to exceeding the sepals), broadly ovate with obtuse apex (vs. ovate, acute apex), smooth at anthesis (vs. strongly corrugate-sulcate at anthesis), and green (vs. dark reddish-castaneous near the base mainly at the beginning of the anthesis to stramineous toward the apex), flowers with a fruit-like fragrance and producing translucent mucilage (vs. with a garlic odor and without any mucilage), sepals broader (17–20 mm vs. 12–15 mm wide), green (vs. yellowish-green), smaller petals (34–36 × 14–20 mm vs. ca. 40 × 22 mm), and shorter filaments (16.5–22.5 mm vs. 27 mm long).Published as part of Leme, Elton M. C., Couto, Dayvid R., Kollmann, Ludovic J. C. & Fraga, Claudio Nicoletti De, 2022, Novelties in Stigmatodon (Bromeliaceae, Tillandsioideae), a genus endemic to Brazil: three new species, one new combination, and two new stigma types, pp. 233-249 in Phytotaxa 576 (3) on pages 243-245, DOI: 10.11646/phytotaxa.576.3.1, http://zenodo.org/record/747160
Stigmatodon enigmaticus D. R. Couto, Gonella & A. F. Costa 2023, sp. nov.
No full textStigmatodon enigmaticus D.R. Couto, Gonella & A.F. Costa, sp. nov. (Figures 1–2) Stigmatodon enigmaticus differs from S. vexatus by the more numerous leaves (15–25 vs. 10–12 in number), distinctly smaller leaf blade (6–8.5 × 1.5–2.3 cm vs. 13–14 × 2.8–3.7 cm), with acuminate apex (vs. caudate), floral bracts red (vs. green), flowers with diurnal anthesis (vs. nocturnal), greenish-yellow sepals (vs. green), yellow petals (vs. greenish-yellow), and stamens and stigma exceeding the corolla (vs. shorter than the corolla). Type: — BRAZIL. Minas Gerais: Conselheiro Pena, Serra do Padre Ângelo, Serra do Pinh „o, campo rupestre, 1,300 m elevation, 2 May 2021 (flowered in cultivation in November 2021), P . M. Gonella 2965, D. P. Cordeiro, G. A. da Silva, P. R. Bartholomay, J. C. Ribeiro & L. Medeiros (holotype MBML!). Description: — Plant rupicolous, heliophytic, 21–35.5 cm tall when flowering, propagating by basal axillary shoots. Leaves 15–25, forming a utriculiform rosette; sheath ovate to elliptic, 6–8.5 × 4–5.5 cm, purplish to purplishgreen distally, castaneous at the base, densely lepidote on both sides, chartaceous; blade narrowly triangular, 6–8.5 cm long, 1.5–2.3 cm wide at the base, green to dark reddish, densely lepidote on both sides, forming white crossbands on adaxial surface, suberect to spreading-recurved, revolute along the margins (under water stress), apex acuminate. Peduncle suberect or curved at the base, (16-) 23–30 cm long, 1.2–1.8 mm in diameter, green, glabrous; peduncle bracts erect, exceeding the internodes, imbricate, elliptic, apex rounded then acuminate to caudate, 1.7–3 × 1.4 cm, the lower ones subfoliaceous, green, the upper ones red, lepidote on both sides, more sparsely lepidote near the margins, densely white lepidote near the apex. Inflorescence simple, 4–12 cm long, suberect, with apical sterile bracts, 3–7 flowered; main axis slightly geniculate, 2.8–3 mm in diameter, green, glabrous, internodes 5–9(-16) mm; floral bracts suborbicular, apex broadly obtuse, 1.7–2.2 × 1.0– 1.7 cm, ecarinate, secund with the flowers at anthesis, red, exceeded by the sepals, densely lepidote abaxially, adaxially glabrous, coriaceous. Flowers distichous, secund at anthesis, diurnal, 4.0– 5.5 cm long; pedicel green, 4.5–7.2 mm long; sepals elliptic, apex obtuse, 20–23 × 10–11 mm, greenishyellow, ecarinate, glabrous, coriaceous, free; petals linear-oblong, 3.0–3.5 × 0.5–0.8 cm, apex rounded to emarginate, suberect with spreading apex, yellow, glabrous, connate at the base to 0.9–1.5 mm, forming a prevailing tubular corolla; petal appendages 6–7.6 × 2–2.5 mm, spatulate, apex rounded, distally free for 2.5–3.2 mm; stamens exserted for 2–3.8 mm; anthers oblong in outline, 4–5 mm long, obtuse, dorsifixed near the base; filaments complanate, 25–31 mm long, pale yellow, adnate to the petals for 4.3–5 mm; ovary superior, 4.2–5.4 mm long; style 30–35 mm long; stigma convolute blade type (the vriseoid type II), exceeding the corolla for 8–9 mm, green, ca. 1.4 mm in diameter. Capsules unknown. Phenology: —Colected with flowers in October (in situ), and in November and December (in cultivation). Distribution and ecology: — Stigmatodon enigmaticus is a lithophyte on quartzitic rocky outcrops (Fig. 1C) within the Atlantic Forest, in the municipality of Conselheiro Pena, eastern Minas Gerais state, Brazil. So far, the species is only known from the type locality at Serra do Pinh„o (above 1,250 m elevation), part of Serra do Padre Ângelo (Fig. 1A). At the type locality, the species forms a small and sparse population, exposed to full sunlight, growing in crevices or fissures, or directly on bare rock, usually on horizontal or inclined quartzitic rocky outcrops (Fig. 1), surrounded by herbaceous and shrubby vegetation (Fig. 1B, C). The floral characteristics of this species, i.e., floral bracts red, flowers with diurnal anthesis, yellow petals, and stamens and stigma exceeding the corolla (Fig. 1F–H), allows us to suggest that it is possibly pollinated by hummingbirds (Neves et al. 2020), an unusual characteristic for the genus Stigmatodon (its species have nocturnal flowers and bat-pollination). This observation raises new and promising perspectives for evolutionary, morphological, and taxonomic studies in Stigmatodon. Preliminary conservation status: —Critically Endangered (CR): B2ab(iii). Stigmatodon enigmaticus is a microendemic species with an Area of Occupancy (AOO) of 4 km ², found only in Serra do Pinh„o (Fig. 1 A–B). While the rock outcrop where it is found is relatively protected from fires by the irregular topography, the surroundings have been severely transformed in the past decades, from the original matrix of Semideciduous Seasonal Forest to pastures for cattle farming. Fires for pasture renovation are regular in the area, as is the active conversion of the few remnants of secondary forest into pastures, with the use of fire, one of such observed during one of the expeditions to the area in October 2022. Similar criminal fires resulted in a wildfire of great proportions that affected the neighboring Pico do Padre Ângelo in September 2020, affecting many of its endemics (Andrino & Gonella 2021, Kollmann & Gonella 2021, Gonella et al. 2022). The frequent fires in the area facilitated the invasion of the rocky outcrops by alien grass species, such as Melinis minutiflora Beauvois (1812: 54), which can be found on the rocky outcrop that S. enigmaticus inhabits. The area where the species is found is not protected by any sort of Protected Area but should be recognized as a priority for conservation given the exceptional biodiversity and the relevance of the ecosystem services provided by the mountainous relief and native vegetation of Serra do Padre Ângelo, such as water cycle, climate balance, and pollinators, among others. Finally, less than 20 mature individuals could be located in the area, suggesting that the population is relatively small, as is common with microendemic species from the Campos Rupestres (Conceiç„o et al. 2007). Given the aforementioned characteristics and threats, we have preliminarily assessed S. enigmaticus as Critically Endangered based on the categories and criteria of IUCN (2012). Etymology: — This new species was discovered in May 2021, when only sterile specimens were observed, and its vegetative characteristics pointed to Stigmatodon. However, when in flower, its red bracts and yellow sepals and petals, common in Vriesea and so far not reported for Stigmatodon, raised the question of its generic placement. This puzzling combination inspired the epithet, from the Greek aenigma meaning “riddle”, or “enigma”. Additional specimens examined (paratypes): ___ BRAZIL. Minas Gerais: Conselheiro Pena, Serra do Padre Ângelo, Serra do Sossego, campo rupestre, 1,250 m elevation, 15 October 2022, (fl.), D. R . Couto 6625, P. M. Gonella, L. Medeiros, D. Cordeiro & L. Magalhães (R!); ibidem, 1,350 m elevation, 13 May 2022, P . M. Gonella 3521, E. P. Fernandez, G. Crispin, G. A. Queiroz & J. C. Ribeiro (MBML!). Discussion: — Stigmatodon enigmaticus, resembles the small rupicolous species of “ Stigmatodon limae group” (Fig. 1 C), from which it is easily distinguished by its red floral bracts, as well as by the yellow and linear-oblong petals, and the exserted stamens and stigma. Among the species of the S. limae group, this new species is morphologically most similar to S. vexatus, which is endemic to the Pico da Aliança, an emblematic quartzitic mountain distant about 20 km from the type locality of S. enigmaticus, in the neigboring municipality of Alvarenga. Stigmatodon enigmaticus can be distinguished from S. vexatus by its ovate to elliptic leaf sheaths (vs. broadly ovate), which are purplish to purplish-green toward the apex and castaneous at the base (vs. vinaceous brown adaxially), leaf blade with revolute margins (under water stress vs. flat to involute), peduncle longer (up to 30 cm vs. up to 13 cm), larger flowers (4.0– 5.5 cm vs. ca. 3.2 cm), and obovate to elliptic sepals (vs. oblong-elliptic; data on S. vexatus from Leme 2016). For the Stigmatodon limae group, three stigma types have been recognized recently (see Leme et al. 2022a), which are relevant to the Stigmatodon taxonomy: tubo-laciniate type II, observed in S. rosulatulus (Leme 2012: 10) Leme, G.K. Br. & Barfuss (in Barfuss et al. 2016: 58) and S. ilhanus Leme & D.R. Couto (in Leme et al. 2022a: 7); (ii) convolute-blade (the vriseoid type II), observed in S. freicanecanus (Siqueira & Leme, 2006a: 377) D.R.Couto & A.F.Costa (in Couto et al. 2022: 352), S. oliganthus (Baker, 1887: 345) D.R.Couto & A.F.Costa (in Couto et al. 2022: 354), S. vellozicolus (Leme & Siqueira 2006b: 406) D.R.Couto & A.F.Costa (in Couto et al. 2022: 354), S. vexatus and S. enigmaticus; and (iii) convolute-blade type III (stigmadontoid type III), observed in S. andaraiensis (Leme 2012: 16) D.R.Couto & A.F.Costa (in Couto et al. 2022: 352), S. itamarajuensis Leme, D.R. Couto & L. Kollmann (in Leme et al. 2022a: 9), S. limae (Smith 1970: 181) D.R.Couto & A.F.Costa (in Couto et al. 2022: 354), and S. zonatus (Siqueira & Leme 2006a: 374) D.R.Couto & A.F.Costa (in Couto et al. 2022: 354). The floral features of S. enigmaticus, i.e., red bracts and yellow perianth, exserted stamens and stigma, and diurnal anthesis, are unique in the genus Stigmatodon but common in Vriesea (Costa et al. 2014, Neves et al. 2020, Couto et al. 2022). These characteristics, associated with hummingbird pollination syndrome (ornithophily), seem to be the ancestral state among bromeliads, while bat pollination (chiropterophily) originated multiple times in the family as a whole (Aguillar-Rodríguez et al. 2019), as well as in Vriesea (Kessler et al. 2020; Neves et al. 2020), and is supported as an ancestral state in Stigmatodon species (Couto et al. 2022). All the 33 previously known species of Stigmatodon bear chiropterophilous flowers, therefore the floral features of S. enigmaticus could result from the retention of the ancestral state or a reversion to it, a hypothesis that needs to be tested with molecular phylogeny.Published as part of Couto, Dayvid R., Gonella, Paulo M. & Costa, Andrea F., 2023, Stigmatodon enigmaticus (Bromeliaceae, Tillandsioideae), a new lithophytic species from the Campos Rupestres within the Brazilian Atlantic Forest, pp. 207-215 in Phytotaxa 584 (3) on pages 209-212, DOI: 10.11646/phytotaxa.584.3.7, http://zenodo.org/record/764569
Stigmatodon vexatus Leme & D. R. Couto 2022, comb. nov.
No full textStigmatodon vexatus (Leme) Leme & D.R. Couto, comb. nov. (Figs. 7 A–E) Basionym: ___ Vriesea vexata Leme, Journal of the Bromeliad Society 66: 137. 2017. Type:— BRAZIL. Minas Gerais: Alvarenga, Pico da Aliança, 1311 m elevation, 19º 23’ 36.16” S, 41º40’13.58” W, 12 October 2012, E. Leme 8704, R. Vasconcelos & R. Oliveira (holotype RB!). Etymology: ___ The name of this species is based on the Latin vexatus, meaning vexed, or annoyed, as a reference to its demure appearance even when in bloom, which makes Vriesea vexata hard to spot in its natural habitat. Distribution and habitat:— Stigmatodon vexatus grows in an isolated Campos Rupestres within the Atlantic Forest Domain, in the municipality of Alvarenga, easternmost Minas Gerais state, about 1300 m elevation. It was observed on bare rocky outcrops in open areas of the highest parts of the mountain known as Pico da Aliança (1440 m elevation at summit), in the Doce River valley. The phytophysiognomy is similar to that of the Espinhaço range, where shrubby vegetation intermingled with herbaceous vegetation dominate the scenery, highlighting a large population of the endangered Vellozia gigantea Menezes & Mello-Silva (1999: 53). Preliminary conservation status: ___ Critically Endangered [CR B2ab (iii)]. Stigmatodon vexatus is a microendemic species (AOO= 4 km 2), known only from the type locality, being restricted to Pico da Aliança. In this area, it forms a small population, sparsely distributed on rocky outcrops, where only a few mature individuals could be located. The type locality is not situated within a protect area, and it is considered a local touristic attraction, which may represent an extra negative impact on its small population. Also, a large population of the invasive grass Melinis minutiflora Beauvois (1812: 54) is observed, which provides larger volumes of biomass to the system, increasing the intensity of periodical fires. Finally, the continuing impacts of fires, cattle, and agriculture in the surroundings, directly affect the quality of the habitat. For these reasons, we have preliminarly assessed S. vexatus as Critically Endangered. Observations: ___ Stigmatodon vexatus is morphologically related to S. lancifolius, which is an endemic species from the Campos Rupestres of the Septentrional Plateau of the Espinhaço Range, in Bahia state. It differs from this species by its shorter size when flowering (ca. 23 cm vs. ca. 70 cm tall), peduncle bracts exceeding the internodes (vs. distinctly shorter than the internodes), shorter inflorescence (ca. 5 cm vs. 8–15 cm long), which is subdensely flowered (vs. laxly flowered), and by the larger floral bracts (17–20 mm vs. 8–12 mm long).Published as part of Leme, Elton M. C., Couto, Dayvid R., Kollmann, Ludovic J. C. & Fraga, Claudio Nicoletti De, 2022, Novelties in Stigmatodon (Bromeliaceae, Tillandsioideae), a genus endemic to Brazil: three new species, one new combination, and two new stigma types, pp. 233-249 in Phytotaxa 576 (3) on page 245, DOI: 10.11646/phytotaxa.576.3.1, http://zenodo.org/record/747160
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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